Syringe nozzle-point.



' G. W. JESSUP.

SYRINGE NOZZLE POINT.

APPLICATION mso JUNE 7, Isle.

1,243,840. Patented oct. 23,1917.

GEORGE w. JnssUr, orinos'roiv, 'MAssAoiaUsnrTs ron.

sYnINGE NozzLE-POINT.

Maaate.'

Specification of Letters Patent. v] 3wi3eli1tqedOct.. 231, g'

application inea June 7, 191e. serial 110,102,204.

To all whom t may concern:

Be it known that I, GEORGE W. Jnssnr, a citizen of the United States, and a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and improved Syringe Nozzle-Point, of which the following is a full, clear, and exact description. l

This invention relates to syringe points of that type disclosed in United States Letters Patent 856,093, granted to H. F. Ong, J une 4, 1907 in which the syringe' is formed with a pneumatic bulb which forms the base of the flexible injection tube so that, when the said tube is inserted into the organ to be treated, the bulb serves as a stopper so as to retain the treating solution in the organ. j Y

The object of the present invention is to improve the pneumatic bulb so that the user can from time to time force air into the bulb for restoring the internal pressure.

in the said patent the bulb is hermetically sealed, but in the course of time the air pressure is considerably lessened so that the bulb does not act as efficiently as a stopper, and by means of the present invention the user can restore the air pressure conveniently when it is necessary, and furthermore, la small quantity of water-a teaspoonful-can be added once a year to keep the bulb moist and pliable, preventing cracking.

A more specific object of the invention is the provision of an inflation tube permanently attached to the bulb and leading into the same, in combination with a stopper, whereby the air forced through the tube when the stopper is opened, can be held in the bulb.

Vllith such objects in View, and others which will appear as the description proceeds, the invention comprises various novel features of construction` and arrangement of parts which will be set forth with particularity in the following description and claims appended hereto.

In the accompanying drawing, which illustrates certain embodiments of the invention and wherein similar characters of reference indicate corresponding parts in all the views,

Figure l is a side view of the nozzle point;

Fig. 2 is a longitudinal section thereof; and

Fig. 3 is a longitudinal section of a modified form of inflation tube.

Referring to the drawing, 1 designates the soft rubber syringe tube which passes axially through the bulb'2 and has an injection portion or nozzle Swhich has a lateraloutlet 4 for the discharge of the solution into the organ that istreated. The bulb 2 has a chamber 5 which. is adapted to contain air under pressure, and if desired, a small amount of liquid 6 may be confined therein l so as to vkeep the internal surface of the bulb kmoist and thereby prolong the life of the rubber.v

V In the construction shown in Figs. land 2v the bulb has a short rubber tube 7 eX- tending into it, and this ytube is vulcanized is removed the bulb can be inflated in any suitable manner. |The outer end of the tube 7 can be inserted in the users mouth and air blown intorthe chamber 5 of the bulb 2. Or a small piece of tubing can be inserted in the tube 7 and air blown through this tubing into the bulb. When the desired pressure is obtained, the tube 7 is compressed at the point 9 by pressing the thumb or finger against the tube, so that no air can escape, and while it is thus' held compressed the stopper 8 is inserted.

With a hermetically sealed bulb it seems that in a year or two, or in less time, the air loses its pressure, and therefore means for restoring the pressure, as herein described,

is desirable, so as to increase the life of the a y device. If desired, an inflating tube 7n can be provided, as shown in Fig. 3, and in this tube a stopper in the formof a check valve 10 is employed, which permits of the ready inflation of the bulb without removing the stopper, the pressure inside the bulb serving to maintain the ball of the check valve closed. It will be noted that the inner end of the tubes 7 and 7a by projecting into the bulb a suitable distance, serves as a trap so that the liquid 6 cannot enter the tube and work out.

By providing a removable stopper in the air tube the latter can be opened when the device is boiled for sterilizing. If the syringe were placed in boiling waterwith- Y.

out the stopper 8 removehtheliquid 6 in the bulb would be converted 'into steam and produce a destructive internalV pressure y Even if the pressure is not suiicient to burst thebulb it `will make the latter increasecona small quantity ott-luid supplied beforev sealing, as has been described.

F rom the foregoing "description taken in connectionV with the Vaccompanying drawing, the advantages of the constructionV and method of operation will Vbe readily understood by those skilled in the art to which theginvention appertains, and while I" have described thenprinciple of operation, together with ,the device which 'l now consider to be the best embodimentthereof, l desire tohave it understood that the device shown is merely illustrative and that such changesrnay be made when desired asfall within the scope of the appended claims.

@Having thus described my invention, claim as new and desire lto secure by Letters Patent:

l. A. syringe nozzle point comprising an injection tubeoi" rubber, a pneumatic rubber' bulb surroundingthe tube, with both ends oftheilatter projecting from the bulb and integrally connected with the latter, a second rubber tube ofsuch length asjto eX- .tend partly into the bulb and having one yend projectingout oi. the saine, the latter tube being integrally connected with the .fbulb'andyfiexible and a stopper in the outer frend of the second tube for permitting air under pressure to be maintained in the bulb.

2. A syringe nozzle point comprising 'a solutionftub'e, apneumatic bulb surrounding the tube, a short tube parallel with the irst-mentioned tube andv connnunicatingV wi-tlrthe bulb for permitting` the latter to be inflated with-air and apreservative fluid to besupplied, said short tube having -a portion exterior-to the bulb, whereby it can bev pinched toholdlthe air-,in the bulb prepara! tory to the insertion ota stopper in theshort tube, and astopper closing the -outerend of the short tube.

3. A syringe nozzle point comprising a rubber bulb, two rubber` tubes substantially parallel with each other and lintegrally connected,'onetube extending entirely through thebulb VandoutV of communication ,there withY for conducting fluid, and the other tubeV extending through the wall of the bulb and communicating with the interior of the latter, said rtubebeing integrally connected with the bulb, andastopper in the outer end of 5 the tube `cominunicating with the bulb. Y

GEORGE Aw. Jessup.

VWitnesses LORNA C.V Jnssur, ALBERT A. SUTHERLAND.

Copies of this-patentmay be obtained for-tive cents eachfby-adressing the yComrnissioner*of Patent-Vs; Washington, 133:01. 

